I used to use calibre for syncing up books that I downloaded (epub, mobi, and PDF). It was a little clunky, but worked great.
I now see they have the option for personal storage! Which takes almost any format (see footer for formats they take), and allows you to upload to your kindle directly! One feature I love that this opens up is the archive feature, because I wanted a way to get rid of my books, but still be able to download them from the kindle itself, and not have to sync up to calibre.
All you need to do is email your firstname.lastname@example.org address, the file and it will upload to your documents!
tidbits for emailing files: you can have multiple attachments/files, you can also leave the subject and body blank or fill with data, doesn't matter.
To find what your @kindle.com address is, click here to log in, and click on manage devices, which will look like this :
[zp src=”email.jpg” album=”blog/amazonkindle” width=”600"]
If you want to see what files you have uploaded and ready to sync you can ‘push’ from this area :
[z[zp src=”clickhere.jpg” album=”blog/amazonkindle” width=”600"]p>
Now if you want to sync uploaded files, you just hover over actions :
[zp [zp src=”hover.jpg” album=”blog/amazonkindle” width=”600"]
tidbits for file conversions : some files require conversion to azk, which will happen on Amazon’s end, and can take up to 4 hours I have been told. I generally saw my files come up within about an hour though.
This is an awesome feature, I hope you all enjoy it, I know i’ll be dumping all of my books on here shortly!
Format kindle personal documents takes (as of this post 12-27-2011) :
Supported File Types
Kindle Personal Documents Service supports multiple file types, including:
Microsoft Word (.DOC, .DOCX)
HTML (.HTML, .HTM)
JPEG (.JPEG, .JPG)
Kindle Format (.MOBI, .AZW)
PDF (.PDF); is supported in our experimental category. See below for details.
The above file types can also be combined in a compressed ZIP (.ZIP) file. ZIP files are automatically opened up by the conversion service, converted to the Kindle format if needed, and sent to your and stored in your Kindle library. Some complex PDF files might not format correctly on your Kindle.
If you prefer to have your personal PDF documents converted to the Kindle format so you can take advantage of Kindle functionality such as variable font size, annotation, Text-to-Speech, etc., type “Convert” in the subject of the e-mail when you submit your personal document to your Send-to-Kindle e-mail address.